CN210686172U - Axial waterproof sealing structure of starter - Google Patents
Axial waterproof sealing structure of starter Download PDFInfo
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- CN210686172U CN210686172U CN201921718842.5U CN201921718842U CN210686172U CN 210686172 U CN210686172 U CN 210686172U CN 201921718842 U CN201921718842 U CN 201921718842U CN 210686172 U CN210686172 U CN 210686172U
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- isolator
- ring
- front cover
- inner ring
- sealing
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a starter axial waterproof sealing structure, the starter includes a front cover, a middle cover, an isolator, a planetary shaft and a speed reducing mechanism component, the isolator is assembled and connected with the front cover through a front cover bearing, the planetary shaft is assembled and connected with the middle cover through a middle cover bearing, the speed reducing mechanism component, the planetary shaft and the isolator are sequentially connected in a transmission way, a framework oil seal is arranged on the isolator and at the outer side of the front cover bearing, the outer ring of the rubber body of the framework oil seal is a static sealing surface, the inner ring is a rotary dynamic sealing surface, a connecting part is arranged between the outer ring and the inner ring, two main lips are symmetrically arranged on the rotary dynamic sealing surface, spring rings are respectively arranged at two sides of the connecting part, the two spring rings radially press the corresponding main lips, a metal framework penetrating through the outer ring, the connecting part and the inner ring is arranged in the rubber body, a retainer ring is arranged between the framework oil seal and the, a first sealing ring is embedded in the first groove and in interference contact with the surface of the isolator.
Description
Technical Field
The utility model relates to a motor seal technical field especially relates to a starter axial waterproof sealing structure.
Background
The motor is a device with high functional requirements, is easily damaged by external dust, water and oil, influences the service life, and has higher sealing requirements particularly under the severe environment working condition. The starter body assembly in fig. 1 is composed of a split front cover 1, a middle cover 2, a shell 18, a rear cover 19, an isolator 3 and the like, and joints among the parts are various, so that sealing difficulty is increased. At present, many starters are required to be normally started underwater, and for the sectional type structure, even if the sealing performance of the connection part between the shell covers is guaranteed, the hidden danger that water vapor enters the isolator inner cavity 20 in the front cover 1 along the axial direction of the isolator 3 and then enters the speed reducing motor inner cavity 21 in the shell 18 still exists, and once the motor inner cavity is filled with water, the starters are directly burnt. Therefore, further optimization of the structure is required to improve the axial sealing performance thereof.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a starter axial waterproof sealing structure to improve its axial sealing ability, stop the isolator inner chamber and even gear motor inner chamber phenomenon of intaking takes place.
In order to achieve the purpose, the utility model adopts the following technical proposal:
an axial waterproof sealing structure of a starter comprises a front cover, a middle cover, an isolator, a planetary shaft and a speed reducing mechanism assembly, wherein the isolator is in assembly connection with the front cover through a front cover bearing, the planetary shaft is in assembly connection with the middle cover through a middle cover bearing, the speed reducing mechanism assembly, the planetary shaft and the isolator are in transmission connection in sequence, a framework oil seal is arranged on the isolator and positioned on the outer side of the front cover bearing and comprises an I-shaped rubber body, the outer ring of the rubber body is a static sealing surface, the inner ring is a rotary dynamic sealing surface, a connecting part is arranged between the outer ring and the inner ring, two main lips are symmetrically arranged on the rotary dynamic sealing surface, spring rings are respectively arranged on two sides of the connecting part and radially press the corresponding main lips, a metal framework penetrating through the outer ring, the connecting part and the inner ring is arranged in the rubber body, and a retainer ring is arranged between the framework, a first groove is formed in the inner ring of the front cover bearing, a first sealing ring is embedded into the first groove, and the first sealing ring is in interference contact with the surface of the isolator.
Furthermore, a second groove is formed in the outer surface of the planet shaft, a second sealing ring is embedded into the second groove, and the second sealing ring is in interference contact with the surface of the inner ring of the middle cover bearing.
To sum up, the beneficial effects of the utility model are that, compared with the prior art, starter axial water proof seal structure is through the special skeleton oil blanket of isolator axial design to add first sealing washer in protecgulum bearing department, guarantee protecgulum and isolator axial seal performance, stop steam and get into the isolator inner chamber, in addition, set up the second sealing washer in middle cover bearing and planet axle department, provide extra waterproof guarantee for the gear motor inner chamber, thereby fully guarantee whole axial seal effect, water-proof effects is showing.
Drawings
Fig. 1 is a schematic structural diagram of an axial waterproof sealing structure of a starter provided by an embodiment of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
fig. 4 is a schematic cross-sectional view of the framework oil seal of fig. 1.
Detailed Description
The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings.
Referring to fig. 1 to 4, the present embodiment provides an axial waterproof sealing structure for a starter, which includes a front cover 1, a middle cover 2, a one-way clutch 3, a planetary shaft 4 and a reduction mechanism assembly 5.
The isolator 3 is assembled and connected with the front cover 1 through a front cover bearing 6, the planet shaft 4 is assembled and connected with the middle cover 2 through a middle cover bearing 7, and the speed reducing mechanism component 5, the planet shaft 4 and the isolator 3 are sequentially in transmission connection.
The outer side of the isolator 3 which is located on the front cover bearing 6 is provided with a framework oil seal 8, the framework oil seal 8 comprises an I-shaped rubber body 9, the outer ring of the rubber body 9 is a static sealing surface, the inner ring is a rotary dynamic sealing surface, a connecting part is arranged between the outer ring and the inner ring, two main lips 10 are symmetrically arranged on the rotary dynamic sealing surface, two sides of the connecting part are respectively provided with a spring ring 11, the two spring rings 11 radially apply pressure to the corresponding main lips 10, the rubber body 9 is internally provided with a metal framework 12 which runs through the outer ring, the connecting part and the inner ring, and a retainer ring 13 is arranged between the framework oil seal 8 and.
A first groove 14 is formed in the inner ring of the front cover bearing 6, a first sealing ring 15 is embedded into the first groove 14, and the first sealing ring 15 is in interference contact with the surface of the isolator 3.
A second groove 16 is formed in the outer surface of the planet shaft 4, a second sealing ring 17 is embedded into the second groove 16, and the second sealing ring 17 is in interference contact with the surface of the inner ring of the middle cover bearing 7.
In addition, a second sealing ring is additionally arranged at the middle cover bearing and the planet shaft, so that an additional waterproof guarantee is provided for the inner cavity of the speed reducing motor, the whole axial sealing effect is fully guaranteed, and the waterproof effect is obvious.
The above embodiments have been merely illustrative of the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and does not depart from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. An axial waterproof sealing structure of a starter, the starter comprises a front cover, a middle cover, an isolator, a planetary shaft and a speed reducing mechanism component, the isolator is assembled and connected with the front cover through a front cover bearing, the planetary shaft is assembled and connected with the middle cover through a middle cover bearing, the speed reducing mechanism component, the planetary shaft and the isolator are sequentially connected in a transmission way, and the axial waterproof sealing structure is characterized in that,
a framework oil seal is arranged on the isolator and positioned on the outer side of the front cover bearing, the framework oil seal comprises an I-shaped rubber body, the outer ring of the rubber body is a static sealing surface, the inner ring of the rubber body is a rotary dynamic sealing surface, a connecting part is arranged between the outer ring and the inner ring, two main lips are symmetrically arranged on the rotary dynamic sealing surface, spring rings are respectively arranged on two sides of the connecting part, the two spring rings radially press the corresponding main lips, a metal framework penetrating through the outer ring, the connecting part and the inner ring is arranged in the rubber body,
a retainer ring is arranged between the framework oil seal and the front cover bearing,
the inner ring of the front cover bearing is provided with a first groove, a first sealing ring is embedded into the first groove, and the first sealing ring is in interference contact with the surface of the isolator.
2. The starter axial waterproof sealing structure according to claim 1, characterized in that: a second groove is formed in the outer surface of the planet shaft, a second sealing ring is embedded into the second groove, and the second sealing ring is in interference contact with the surface of the inner ring of the middle cover bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921718842.5U CN210686172U (en) | 2019-10-14 | 2019-10-14 | Axial waterproof sealing structure of starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921718842.5U CN210686172U (en) | 2019-10-14 | 2019-10-14 | Axial waterproof sealing structure of starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210686172U true CN210686172U (en) | 2020-06-05 |
Family
ID=70886054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921718842.5U Active CN210686172U (en) | 2019-10-14 | 2019-10-14 | Axial waterproof sealing structure of starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210686172U (en) |
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2019
- 2019-10-14 CN CN201921718842.5U patent/CN210686172U/en active Active
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